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Finding the Fourth Proportional to 254,688.84, 351,449.46 and 139,961.46

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Solution

The fourth proportional to 254,688.84, 351,449.46 and 139,961.46 is: 193,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,688.84 : 351,449.46 = 139,961.46 : x
  2. Step 2: Convert to fraction form
    254,688.84/351,449.46 = 139,961.46/x
  3. Step 3: Cross multiply
    254,688.84x = 351,449.46 × 139,961.46
  4. Step 4: Simplify right side
    254,688.84x = 49,189,379,537.81
  5. Step 5: Solve for x
    x = 49,189,379,537.81/254,688.84
  6. Step 6: Final answer
    x = 193,135.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.